Diverse certainly carries the sense you require here:
diverse adjective ... B2 ...
[b] very different from each other:
We hold very diverse views on the topic.
The complication here is that the default sense of 'diverse' speaks of variation within a composite unit:
B2 [a] including many different types of people or things: ...
New York is a very culturally/ethnically diverse city. ...
Linguistics embraces a diverse range of subjects such as phonetics and stylistics.
There is a diverse range of opinion on the issue.
India is quite diverse, both politically and religiously.
Members of the largest and most diverse phylum of animals (Arthropoda), have segmented bodies and an external skeleton.
So, to avoid this ambiguity which possibly defaults to the unintended sense (X is diverse and Y is also diverse) (although context would lead the informed reader to suspect the intended reading), one could use
This setup is extremely general, and allows for modeling systems as
different / disparate [stronger] as X and Y.